Energy its impact on global society
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Energy & Its Impact on Global Society. Jerome K. Williams, Ph.D. Saint Leo University Dept. Mathematics & Sciences. Part 2: Introduction. Energy Resources & Reserves Energy Calculations Lifecycle of Energy Resource Energy Conservation. Energy Resources & Reserves.

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Energy its impact on global society

Energy & Its Impact on Global Society

Jerome K. Williams, Ph.D.

Saint Leo University

Dept. Mathematics & Sciences


Part 2 introduction

Part 2: Introduction

  • Energy Resources & Reserves

  • Energy Calculations

  • Lifecycle of Energy Resource

  • Energy Conservation


Energy resources reserves

Energy Resources & Reserves

  • Two principal questions

    • How large is each resource?

    • How long will it last?

  • Resources that can be recovered profitably using present technology are called reserves


Energy resources reserves1

Energy Resources & Reserves

  • Each type of energy reserve is measured in units appropriate to its physical form

    • Tons of coal(ton)

    • Barrels of oil(bbl)

    • Trillion cubic feet natural gas(tcf)


Energy resources reserves2

Energy Resources & Reserves


Energy resources reserves3

Energy Resources & Reserves


Energy its impact on global society

Source: US Energy Information Administration


Energy resources reserves4

Energy Resources & Reserves

  • Common Base Unit for Energy is called the British Thermal Unit (Btu)

    • The amount of energy required to raise the temperature of 1 lb of water by 1 degree Fahrenheit.

    • Approximately the energy released by burning a kitchen match


Energy calculations

Energy Calculations

  • U.S. oil reserves are estimated at 29 billion barrels, and we currently produce about 6 million barrels a day. How long, in years, will these reserves last at this production rate?

  • Answer:13 years


Lifecycle of energy resource

Lifecycle of Energy Resource

  • Use or exploitation of resource shows three stages

    • Initial period of increase

    • Production reaches a maximum

    • Decline phase eventually going to zero


Energy conservation

Energy Conservation

  • Total energy consumed in any activity is a result of two factors:

    • How much energy output vs. amount you input?

    • What is the length or amount of that activity?


Energy conservation1

Energy Conservation

  • Efforts of energy conservation usually concentrate on two approaches:

    • Technical Fix: goal is to reduce energy required for activity

    • Lifestyle Change: Modify behavior to reduce frequency of activity


Suggested problems

Suggested Problems

  • Questions: 1, 3, 13, 17


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